Mars contains ores which could be useful to colonists. The volcanic activity and number of craters are strong indicators that there will be a variety of ores to be found. For instance, the opportunity rover found evidence of these areas of thermal alteration around the rim of the Endeavor crater.
Ore will need to be processed and refined into usable and useful construction material, so it is one of the key first steps in allowing the colony to expand in a self-sufficient manner.
Martia tokens can be staked to receive a share of the 225,000 Ore tokens awarded each hour.
Ore can also be acquired from the Exploration mini-game.